Dish-washing machine.



J. G. GOGHRANB.

DISH WASHING MACHINE.

nruoumu FILED 11u22, 1909.

Patented Nov. 21, 1911.

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J. G. COCHRANE.

DISH WASHING MACHINE.

APrLloA'rxoN FILED un zz, 1909.

Patented Nov. 21, 1911.

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0000900 oonoo ooaoOc ooooo o ooeco oeoo J. G. GOCHRANE.

DISH WASHING MACHINE.

ArPLIoA'x'Iox FILED MAYM, xeon.

1,009,223. Patented 11011.21, 1911.

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UNITED STATES PATENT OFFICE.

JOSEPHINE G. CGCHRANE, 0F CHICAGO, ILLINOIS.

DISH-WASHING MACHINE.

To all whom it may concern:

Be it known that I, JosErHINE G. Coon- RANE, a citizen of the UnitedStates, resid.- ing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inDish-Washing Machines, of which the following is a speciA ication.

This invention relates to improvements in dish washing machines, and oneof the objects of the same is to provide improved means for spraying ordelivering. the water into the machine both from above and below thedishes.

A further object is to provide an improved rotatable spraying or waterdelivering nozzle.

A further object is to provide improved means for protecting the dishesfrom being injured by the rotatable nozzle.

A further object is to provide improved means for delivering the waterinto themachine, which may be adjusted to permit the insertion orremoval of some of the parts of the machine.

A further object is to provide an improved sectional closure for themachine and improved means whereby the operation of one of the sectionswill simultaneously operate the other section to open or close the same.

A further object is to provide an im roved sectional closure, one of thesections o which is readily detachable from the machine, and improvedmeans for directing the dish racks into the machine.

A further object is to provide an improved machine of this characterwhich will be simple, durable and cheap in construction and effectiveand eliicient 1n operation.

To the attainment of these ends and the accomplishment of other new anduseful objects as will appear, the invention consists in the features ofnovelty in the construction, combination and arrangement of the severalparts hereinafter more fully described and claimed, and shown in theaccompanying drawings illustrating an embodiment of the invention, andin which- Figure 1 is a vertical sectional view partly in elevation ofan improved machine of this character, constructed in accordance withthe principles of this invention. Fig. 2 is a sectional view on line 2-2of Fig. 1. Fig. 3 is a sectional view on line 3 3 of Fig. 1. Fig. 4 is adetail sectional View of a portion of the casing and closure therefor,showing Specification of Letters Patent.

Application filed May 22, 1909.

Patented Nov. 21, 1911.

Serial No. 497,587.

the closures in an open position. Fig. 5 is a detail elevation partly insection showing a modified form of the spraying nozzle. Fig. (3 is adiagrammatic plan view of a portion of the mechanism and one of thesections of the closures showing the manner in which the dish racks maybe directed or guided into the machine. Fig. 7 is a detail elevation ofanother modification of the spraying nozzle. Fig. 8 is a side elevationof the modilication shown in Fig. 7. Fig. 9 is a section on the line 9 9of Fig. 8. Fig. 10 is a diagrammatic view showing the spraying effect ofthe modified form of the nozzle shown in Figs. 7, 8 and 9.

Referring more particularly to the drawings, and in the presentexempliiication of the invention, the numeral 10 designates generally acasing which is supported by suitable uprights 11. This casing may be ofany desired height and configuration, and the bottom thereof is providedwith a depressed portion or well 12 located substantially at the centerthereof, and the portion of the bottom above the well inclinesdownwardly from the sides of the case toward the well to cause the waterwhich falls upon the bottom 13 to be directed into the well ordepression. The front of the upper portion of the casing is cut away toform an opening through which the dishes may be inserted into andremoved from the casing, and eX- tending across the casing adjacent thefront and below the offset or cut away portion is a supporting bar ormember 14 which is spaced slightly from the front of the casing.

A closure comprising two sections 15, 16 is provided for the openportion. One of these sections 16 is hinged as at 17 to the top of thecasing, and the other section 15 is provided with a substantially Ushaped portion 18 secured to the lower edge thereof which opens towardthe adjacent edge of the section and is adapted to stand astride of thebar or member 14 whereby the latter will form a hinge for the section15, and the said section may be readily detached from the casing for thepurpose of cleaning, or for any other desired purpose.

Secured to the sections 15, 1G respectively are links 19, 20 arranged ateach side of the respective sections. These links are secured by one endto the sections, and their free ends are pivotally connected as at 21,whereby the movement of one of the sections of the closure about itspoint of pivotal support will simultaneously operate the other sectionto open and close the same. 1f desired, suitable braces 22 may beprovided, and which are secured to the linlc 20 and a portion of thesection 1G beyond its pivot for bracing the same.

Arranged within the casing and spaced from the side walls thereof aremembers 23 (see Fig. 3) into which flanges 24, 25 on the edges of therespective closure sections adapted to enter when the closures are in aclosed position. One of these sections, pret'- erably the section 15, isprovided with a handle 2G by means of which the closures may beoperated, and if desired, suitable transparent portions 27 in the formof windows may be provided in the section 15 through which the interiorof the casing may be seen.

A supply pipe 23 is arranged within the casing, preferably in one cornerthereof and adjacent the back, and this pipe 2S preferably extendsthrough the top of the casing to form a projecting portion 29 to whichany suitable supply pipe may be connected for supplying water to thepipe 28. A pipe 30 is also arranged within the easing adjacent the backthereof and preferably in proximity to the top of the casing. This pipehas connection with the pipe 23 through the medium of a connecting joint31, and the other extremity of the pipe 30 is supported in a suitablebearing 32 on the opposite side of the casing. Extending from and havingcommunication with the pipe 30 are a plurality of forwardly projectingbranches 33, which latter extend toward and terminate short of the frontof the casing, and are provided with downwardly projecting nozzles 34for discharging the water which enters the pipe 30 and branches 33 on tothe dishes from above. A pipe 35 similar to pipe 30 also hascommunication with the pipe 28, preferably below the dish rack support,and extending forwardly from and communicating with the pipe 35 arebranches 3G similar to the branches 34, and which are provided withupwardly projecting nozzles 37 adapted to spray the dishes from below.

The connecting joint 38 of the pipe 35 with the pipe 28 may be of anydesired or suitable construction which will permit the pipe 35 to beaxially rotated to raise the branches 3G from the position shown in fulllines in Fig. 2, and the position shown in dotted lines in said figure,for a purpose to be set forth.

A suitable controlling valve designated generally by the referencenumeral 39 is provided in the pipe 28 at any suitable or convenientpoint, preferably adjacent the top thereof, and this valve is providedwith an operating stem 40 which extends through the side of the casing,and a handle 41 is secured to the projecting extremity of the are stemby means of which the valve 39 may be readily controlled.

Arranged within the Well or depressed portion 12 of the casing is a pump42, the casing of which is provided with a plurality of apertures 43through which the water in the well enters the pump. Projecting upwardlyfrom the casing of the pump is an outlet pipe 44, and resting upon theextremity of this outlet pipe is a tubular member 45, the freeextren'iity of which is journaled in a suitable bearing 46 through themedium of an axle 47 which is secured in any suitable lnanner to theclosed free extremity 43 of the tubular member. This bearing 46 ispreferably supported by the top of the casing. I )rojeeting from andhaving communication with the tubular member 45 and preferably below thepipe 30 are arms 4), 50 having downwardly dcflected portions 51, and tothe extremities of which portions are secured nozzles 53, 54.

The extremity of one of the arms, preferably the extremity 52 of thc arm50, is arranged parallel with the upright tubular member 45, as shownmore clearly in dotted lines in Fig. of the drawings, while theextremity 51 of the arm 49 is arranged in a plane inclined to thevertical, and to the upright tubular member 45, so that when the wateris forced from the pump 42 through the tubular outlet 44 and into thetubular member 45, the water passing out of the nozzle 54 will bedischarged directly downward, or in a substantially vertical plane,while the water being discharged from the nozzle will be directed in aninclined plane, which will tend to rotate the tubular member 45,together with the arms 49, 50. rlhese arms 49, 50, and the deectedextremities 51, 52, may be of any desired length, but are preferably ofa length to stand within the space between the branches 33 of the pipe30, and are located in close proximity to the pipe 30.

Surrounding the tubular member 45 with a turning fit and preferablysupported by a close fitting Contact with a portion of the tubularoutlet pipe 44, is a sleeve 55 for a purpose to be set forth.

Arranged within the casing and above the branches 3G of the pipe 35, isa suitable plate rack support 5G, upon which the racks 57 containing thedishes 58 are adapted to rest, and, if desired, these supports 56 may beprovided with suitable guides or tracks 59.

When the racks are in the position shown in Fig. 1, and when the pump 42is operated through the medium of the driving shaft 60, which latter maybe driven in any desired or suitable manner, and which extends throughsuitable hearings 61, the Water will be drawn into the easing 42 of thepump through the apertures 43, and will be forced through the dischargepipe 44 into the tubular member 45 and sprayed upon the dishes in themanner already set forth, during which spraying, the nozzles 53, 54 willbe rotated. It will thus be apparent that the tubular member 45 may befreely rotated within the sleeve 55. The sleeve 55 being held stationaryby reason of its tight connection with the outlet pipe 44, permits thedishes 58 to be disposed in close proximity to the -tubular member 45without being ground or chipped by said tubular member 45. The sleeve 55thus performs the function of a shield for the dishes.

When the valve 39 is open to permit the water to enter the pipe 28, itwill pass from the pipe 28 into the pipes 30, 35, and from these pipesinto the respective branches 33, 36 to be delivered to the dishes bothfrom above and below, and by the rotating nozzles 53, 54, the water willalso be thrown upon all of the dishes, thereby thoroughly washing thesame.

Arranged below the pipe 35 and the branches 36 are strainers 62, whichare removably supported by means of suitable supports 63. Thesestrainers are preferably constructed in sections, as shown more clearlyin Fig. 3 of the drawings, and are adapted to catch all of the crumbsand particles which are washed from the dishes, and which were notremoved from the dishes before being placed into the machine.

The water discharged through the various nozzles will enter the well ordepressed portion 12 in the bottom of the casing and accumulate therein.

A suitable outlet 64 is provided in the bottom of the well 12, and aremovable outlet pipe 65 has communication with the outlet 64 andprojects into the casing. This outlet pipe 65 may be of any desiredheight, according to the height to which it is desired to accumulate thewater in the base of the machine, but is preferably of a height slightlyhigher than the top of the casing 42 of the pump, so that the water maybe allowed to accumulate in the base of the machine during whichaccumulation the grease will rise to the top of the water and will passover the top of the pipe 65 and out of the discharge pipe, therebyseparating the grease from the water and preventing the grease frombeing forced through the pump to be sprayed upon the dishes. When it isdesired to discharge all of the water from the casing, the outlet pipe65 may be readily removed by means of the handle 66.

After the dishes have been washed and the racks 57 removed from themachine, the branches 36 of the pipe 35 may be raised to the positionshown in dotted lines in Fig. 2, which movement will axially rotate thepipe 35 to permit such movement of the branches 36. When the branches 36have been thus raised, the strainers 62 may be readily removed from thecasing, and may be as readily re-inserted. When the strainers have beenreplaced, the branches 36 of the pipe 35 may be again lowered intooperative position.

In the exempliication of the invention shown in Fig. 5 of the drawings,the tubular member 45 is provided with branches 67, 68 similar to thebranches 49, 50, and which are preferably located below the plate racksupport, and above the screens 62. The eX- tremities of these branches67, 68 are deflected upwardly, as at 69, 70, and nozzles 71, 72, similarto the nozzles 54, 53,V are provided for the deflected portions. Thedelected portion 69 of the branch 67 is preferably arranged in anupright plane parallel to the axis of the tubular member 45', andsimilar to the extremity 52 of the branch 50, while the portion 70 ofthe branch 68 is arranged in a plane inclined to the portion 69 in amanner similar to the portion 51 of the branch 49, and the inclinedportions of the respective nozzles are arranged with respect to eacho-ther so that one of the nozzles which is arranged in a vertical planewill be opposed to the deflected portion of the opposite nozzle, wherebythe pressure of the water as it is discharged from the nozzles will beuniformly exerted upon the tubular member 45 to cause the same to besteadily rotated.

If desired, the nozzle designated generally by the reference numeral 73in Fig. 5 of the drawings may be elnployed with the branches 36 of thepipe 35, or the branches 36 may be omitted and the nozzle aloneemployed.

Then thc section 16 of the casing closure is opened to the positionshown in Fig. 4, it will rest upon the edge of the casing and besupported thereby to form a ledge or support for the racks as they aredrawn from the machine, or are being inserted within the machine, and ifdesired, a suitable guide 74 may be provided upon the section 15, whichserves as a means for directing the racks within the tracks or guides 59which are secured to the support 56. If desired, and as shown in Fig. 5of the drawings, one or more racks 57 may be superposed before beingplaced in the machine, and by providing the nozzles which spray thedishes from above and below, it will be apparent that the dishes in eachof the superposed racks will be thoroughly washed.

When it is desired to clean the machine, the section 15 of the closuremay be readily detached from the supporting rod 14 and may be allowed tohang down against the frhnt of the casing, it being supported by thelinks 19. 20, and by the removal of this section, it will be apparentthat the operator .,f 5 ing nozzle shown 1n Digs. 7, 8, 9 and 10, the

r'elbows 4:9, 50 employed in the previously described embodiments, areremoved and in place thereof, are inserted the couplings 8() and S1 tothe outer ends of which are se- 10 cured the angular sprayer sockets 82and 53, each ot' which is provided above with a circular opening Sl)(see Fig. 9). Suspended centrally within the socket 83 is a plugconieally enlarged at the bottom 85.

Said plug is reduced in size at its upper end SG, and mounted with asliding fit in the opening 89 of the socket casing 83. The cotter 90serres to hold the plug in position. Socket S3 at the bottom and thelower end S5 of the plug, are so shaped and positioned as to provide anarrow conical passage for the water by means of which the nozzles S2and S3 give ott a double conical Spray as shown in Fig. l0. By means ofthis ar rangement the water is projected in every direction and reachesevery desired point in the machine.

In order that the invention might. be fully understood, the details ofthe foregoing embodiment thereof have been thus specifically described,but

that I claim as new is:

1. In a dish washing machine, the combination of a casing provided witha support for the articles to be washed, an upright rotatable pipe, adischarge nozzle at, each end ol said pipe, said nozzles being supportedby and having communication with the pipe respectively above and belowsaid article support, and means for forcing the water into the pipe andthe nozzles.

In a dish washing machine, the combination of a casing for the dishes tobe washed, a supply pipe, discharge nozzles in communieation with saidpipe, said nozzles being spaced from each other longitudinally of thepipe, means for holding the articles i to be washed between saidnozzles, and means tor forcing water through the nozzles,

said pipe and nozzles being rotated by the water discharged from saidnozzles.

Il. ln a dish washing machine, the Combination of a casing for thedishes, a pipe, a plurality of pairs of rotatable nozzles connected withsaid pipe, said pairs of nozzles being spaced from each otherlongitudinally ot' the pipe, and means for forcing water through thenozzles, one nozzle of each pair being arranged to discharge parallelwith the upright pipe and the other nozzle of each pair being arrangedto discharge at an inclination to the vertical.

ln testimony whereotl I have signed my name to this specification, inthe presence ot' two subscribing witnesses, on this 20th day of October,A. D. 1908.

JOSEIHINE G. COCHRANE.

W'itnesses Il. SEEM, J. ll. JocuUM, Jr.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

